Lactuca vs asterid dicot genus

Lactuca and asterid dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lactuca	Yes	No	No	No
asterid dicot genus	Yes	No	No	No

As nouns, asterid dicot genus is a hypernym of Lactuca; that is, asterid dicot genus is a word with a broader meaning than Lactuca:

Lactuca: an herb with milky juice: lettuce; prickly lettuce
asterid dicot genus: genus of more or less advanced dicotyledonous herbs and some trees and shrubs

Lactuca (noun)	asterid dicot genus (noun)
an herb with milky juice: lettuce; prickly lettuce	genus of more or less advanced dicotyledonous herbs and some trees and shrubs